Brand new seller, I have a few questions about how to package/label/barcode stickers to ship to FBA?

How should I package hundreds of stickers to ship to amazon? Can they be loose in a small box, with barcodes on the back?

What do I do if a sticker is smaller than a barcode?

When they are shipped to customers, will amazon put them in a larger box with other items (potentailly damaging sticker), or do they ship separate?

Anything else I should know about packaging these little guys?